PHPMailer - No Error with SendMail but no Email Received

I am trying using PHPMailer to send email, the script executed successfully without error but email was not received.

Below is the email server settings, please anyone tell me if anything is wrong wit these settings.
Thanks for your help.

function serverSettings($mail)
  {
 
      $mail->SMTPDebug = 2; // for detailed debug output
      $mail->isSMTP();
      $mail->Host = 'localhost';
      $mail->SMTPAuth = true;
      $mail->SMTPSecure = 'ssl';
      $mail->Port = 465;

      $mail->Username = 'info@domain.com'; // YOUR mail email
      $mail->Password = 'mypassword'; // YOUR mail password
    
  }